Difference between revisions of "Eriogonum twisselmannii"
in P. A. Munz, Suppl. Calif. Fl. 40. 1968.
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{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Eriogonum twisselmannii | |accepted_name=Eriogonum twisselmannii | ||
− | |accepted_authority=(J. T. Howell) Reveal | + | |accepted_authority=(J. T. Howell) Reveal |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in P. A. Munz, Suppl. Calif. Fl. | |title=in P. A. Munz, Suppl. Calif. Fl. | ||
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}} | }} | ||
|common_names=Twisselmann’s wild buckwheat | |common_names=Twisselmann’s wild buckwheat | ||
− | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
+ | |code=E | ||
+ | |label=Endemic | ||
+ | }}{{Treatment/ID/Special_status | ||
+ | |code=C | ||
+ | |label=Conservation concern | ||
+ | }} | ||
+ | |basionyms={{Treatment/ID/Basionym | ||
|name=Eriogonum douglasii var. twisselmannii | |name=Eriogonum douglasii var. twisselmannii | ||
|authority=J. T. Howell | |authority=J. T. Howell | ||
+ | |rank=variety | ||
+ | |publication_title=Leafl. W. Bot. | ||
+ | |publication_place=10: 13. 1963 | ||
}} | }} | ||
|synonyms= | |synonyms= | ||
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|distribution=Calif. | |distribution=Calif. | ||
|discussion=<p>Of conservation concern.</p><!-- | |discussion=<p>Of conservation concern.</p><!-- | ||
− | --><p>Eriogonum twisselmannii is a rare species of the southern Sierra Nevada and is known only from Slate Mountain and The Needles in Tulare County. It is worthy of being on a “watch” list of rare plants in California, but because of its remote location, it is not threatened.</p> | + | --><p><i>Eriogonum twisselmannii</i> is a rare species of the southern Sierra <i>Nevada</i> and is known only from Slate Mountain and The Needles in Tulare County. It is worthy of being on a “watch” list of rare plants in California, but because of its remote location, it is not threatened.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Eriogonum twisselmannii | name=Eriogonum twisselmannii | ||
− | + | |authority=(J. T. Howell) Reveal | |
− | |authority=(J. T. Howell) Reveal | ||
|rank=species | |rank=species | ||
|parent rank=subgenus | |parent rank=subgenus | ||
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|publication title=in P. A. Munz, Suppl. Calif. Fl. | |publication title=in P. A. Munz, Suppl. Calif. Fl. | ||
|publication year=1968 | |publication year=1968 | ||
− | |special status= | + | |special status=Endemic;Conservation concern |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_745.xml |
|subfamily=Polygonaceae subfam. Eriogonoideae | |subfamily=Polygonaceae subfam. Eriogonoideae | ||
|genus=Eriogonum | |genus=Eriogonum |
Latest revision as of 23:13, 5 November 2020
Herbs, matted, occasionally polygamodioecious, (0.2–)0.5–1.5 × 3–4 dm, tomentose. Stems: caudex spreading; aerial flowering stems erect or nearly so, slender, solid, not fistulose, arising at nodes of caudex branches and at distal nodes of short, nonflowering aerial branches, (0.2–)0.5–1.2 dm, tomentose, with a whorl of 4–8 leaflike bracts ca. midlength, similar to leaf blades, 0.4–0.8 × 0.1–0.3 cm. Leaves in loose to congested basal rosettes; petiole 0.2–0.4 cm, thinly tomentose; blade oblanceolate to elliptic, 0.5–1 × (0.2–)0.4–0.6 cm, white- or grayish-tomentose abaxially, thinly tomentose to nearly glabrous and dull green adaxially. Inflorescences capitate, 0.7–1.5 cm wide; branches absent; bracts absent immediately below involucre. Involucres 1 per node, campanulate, (2.5–)4–5 × 4–6 mm; teeth 6–9, lobelike, strongly reflexed, (2–)3–5 mm. Flowers (4–)5–6 mm, including 1–1.3 mm stipelike base; perianth pale yellow, villous abaxially; tepals slightly dimorphic, those of outer whorl obtuse, 3–5 × 3–3.5 mm, those of inner whorl broadly oblanceolate, 5–6 × 2.5–3 mm; stamens exserted, 4–5 mm; filaments pilose proximally. Achenes light brown, 5–5.5 mm, glabrous except for sparsely pubescent beak.
Phenology: Flowering Jun–Sep.
Habitat: Rocky outcrops, montane conifer woodlands
Elevation: 2300-2600 m
Discussion
Of conservation concern.
Eriogonum twisselmannii is a rare species of the southern Sierra Nevada and is known only from Slate Mountain and The Needles in Tulare County. It is worthy of being on a “watch” list of rare plants in California, but because of its remote location, it is not threatened.
Selected References
None.